🐛 --hyperlinks can't parse GitHub Enterprise URL

I have a case that I think is not solved with just `--hyperlinks` and `--hyperlinks-commit-link-format`. I was excited to emit hyperlinks, but `--hyperlinks-commit-link-format` doesn't really make sense to me, as one has to specify the entire path to a repo, making it useless unless it's replicated across multiple `.gitconfig` files, which is quite prohibitive.

I have a URL like

```
» git remote get-url origin
git@github.COMPANY.com:ORG/repo.git
```

looking at src/git_config/git_config_entry.rs#L23 I would expect the REGEX to be able to take any `github.*\.com` and then it could be parsed completely for any GitHub Enterprise URL. Unless I'm missing something, there's no way to do this currently, as one can only put the `{commit}` in a custom URL.

Read src/git_config/git_config_entry.rs#L23 first, then trace how --hyperlinks and --hyperlinks-commit-link-format handle the shown GitHub Enterprise remote. Done means the git@github.COMPANY.com:ORG/repo.git form can be parsed for commit hyperlinks without requiring the entire repository path to be replicated in configuration.

Written by the indexing model from the issue text.